| 摘要 |
<p>A tile assembly 22 is provided. The tile assembly 22 is, in use, fitted to a base structure 12, 16, 20 to form at least part of a fluid washed surface. The tile assembly 22 comprises a housing 42 with at least one plenum 45 being provided within the housing 42. A wall 44 of the housing 42 is provided with a plurality of flow passages 46 which extend from the plenum side of the wall 44 to an outer surface of the wall 44. Flow passage closures 50 are provided which are operable to open and close at least some of the flow passages 46.</p> |
